Objective To inform the update of the European Association for the Study of Diabetes clinical practice guidelines for nutrition therapy. Design Systematic review and meta-analysis of randomised controlled trials. Data sources Medline, Embase, and the Cochrane Library searched up to 13 May 2021. Eligibility criteria for selecting studies Randomised controlled trials of three or more weeks investigating the effect of diets with low glycaemic index (GI)/glycaemic load (GL) in diabetes. Outcome and measures The primary outcome was glycated haemoglobin (HbA 1c ). Secondary outcomes included other markers of glycaemic control (fasting glucose, fasting insulin); blood lipids (low density lipoprotein cholesterol (LDL-C), high density lipoprotein cholesterol (HDL-C), non-HDL-C, apo B, triglycerides); adiposity (body weight, BMI, waist circumference), blood pressure (systolic blood pressure (SBP) and diastolic blood pressure (DBP)), and inflammation (C reactive protein (CRP)). Data extraction and synthesis Two independent reviewers extracted data and assessed risk of bias. Data were pooled by random effects models. GRADE (grading of recommendations assessment, development, and evaluation) was used to assess the certainty of evidence. Results 29 trial comparisons were identified in 1617 participants with type 1 and 2 diabetes who were predominantly middle aged, overweight, or obese with moderately controlled type 2 diabetes treated by hyperglycaemia drugs or insulin. Low GI/GL dietary patterns reduced HbA 1c in comparison with higher GI/GL control diets (mean difference −0.31% (95% confidence interval −0.42 to −0.19%), P<0.001; substantial heterogeneity, I 2 =75%, P<0.001). Reductions occurred also in fasting glucose, LDL-C, non-HDL-C, apo B, triglycerides, body weight, BMI, and CRP (P<0.05), but not blood insulin, HDL-C, waist circumference, or blood pressure. A positive dose-response gradient was seen for the difference in GL and HbA 1c and for absolute dietary GI and SBP (P<0.05). The certainty of evidence was high for the reduction in HbA 1c and moderate for most secondary outcomes, with downgrades due mainly to imprecision. Conclusions This synthesis suggests that low GI/GL dietary patterns result in small important improvements in established targets of glycaemic control, blood lipids, adiposity, and inflammation beyond concurrent treatment with hyperglycaemia drugs or insulin, predominantly in adults with moderately controlled type 1 and type 2 diabetes. The available evidence provides a good indication of the likely benefit in this population. Study registration ClinicalTrials.gov NCT04045938 .
INTRODUCCIÓNLa pileflebitis o tromboflebitis séptica de la vena porta es un proceso infeccioso cuya incidencia ha ido en aumento en los últimos años, debido especialmente, a un incremento en su detección por medio de las técnicas de imagen, tales como la ultrasonografía y la tomografía axial computerizada (TAC) (1).La tromboflebitis séptica de la vena porta puede complicar la sepsis intrabdominal de cualquier etiología, aumentando la morbilidad y mortalidad de manera significativa.A pesar del desarrollo de nuevos antibióticos y anticoagulantes, la tasa de mortalidad en las diferentes series se mantiene alrededor del 35% (1). La medida más importante para conseguir la reducción de estas cifras de mortalidad sería poder establecer un diagnóstico precoz de la enfermedad, localizar el foco infeccioso causante de la trombosis portal e iniciar el tratamiento adecuado.Presentamos el caso de un paciente con pileflebitis secundaria a diverticulitis. [0212-7199 (2006) RESUMENPresentamos el caso de un varón de 52 años, con antecedentes de cólicos renoureterales que había consultado por un episodio de similares características, acompañado de fiebre y elevaciones de la GGT y de la fosfatasa alcalina. Una ecografía abdominal mostró hepatoesplenomegalia y un material ecogénico en el eje esplenoportal, sugerente de trombosis. La TAC abdominal demostró trombosis de la vena mesentérica inferior, continuándose por la vena esplénica hasta el origen proximal de la vena porta. También se observaron numerosos divertículos. Se sospechó que el paciente presentaba una diverticulitis aguda complicada con trombosis vascular, por lo que se decidió la realización de cirugía, que confirmó la existencia de diverticulitis sin perforación ni abscesos, flebitis con pileflebitis de la arteria mesentérica inferior hasta su unión con la vena esplénica, con salida de pus al seccionar la vena. Se realizó ligadura de la vena mesentérica inferior e intervención de Hartman con ligadura del muñón rectal y colostomía. Además se indicó tratamiento antibiótico de amplio espectro y anticogulación, siendo la evolución favorable.Posteriormente comentamos algunos aspectos etiológicos, clínicos, diagnósticos y terapéuticos de esta infrecuente complicación de la diverticulitis.PALABRAS CLAVES: Pileflebitis. Diverticulitis. Trombosis de la porta. ABSTRACT
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